Non Return Damper


LE damper only allows a positive draft or air to pass through in one direction. If only backdraft, the damper will shut automatically.


Galvanised steel, standard steel, aluminum constructed parallel blade provide one way air passage. Linkage with bronze bush or bearing cap.


  • Suitable for exhaust system (one way flow)
  • Automatically shut if there is any backdraft
  • Attractively designed backdraft equipment suitable for easy installation to ductwork.